Oiling device



Aug. 11, 1925.

F. SCHAFER. SR

OILING DEVICE Filed Nov. 5. 1923 S Mam Patented Au 11, 1925 ETD T FRANKSCI-IAFER, SR., 0F DULUTH, MINNESOTA.

OILING Application filed November To all whom it may concern:

Be it known that I, FRANK SoHArnn, Sn, acitizen of the United States,residing at Duluth, in the county of St. Louis and State of Minnesota,have invented certain new and useful Improvements in Oiling Devices, ofwhich the following is a specification, reference being had therein tothe accompanying drawing.

This invention relates to oiling devices and has special reference tonovel oiling means for crank pins of an internal combustion engine, theprincipal object being to provide a more efficient oiling device thanheretofore known.

Other objects and advantages of the invention will appear in the furtherdescription thereof.

Referring to the accompanying drawing, forming part of this application,in which like reference characters indicate like parts:

Figure 1 is a side elevation of the lower end of an engine connectingrod, with the oiling device partly in section; and

Figure 2 is an enlarged transverse section on the line 22 of Figure 1,showing the boot in plan view.

1 represents the ordinary connecting rod, usually of substantiallyI-beam section, and 2 represents the oil well usually found in internalcombustion engines into which the lower end of the connecting rod dipsduring its revolution receiving its lubrication by what is known as thesplash system.

The inefficiency of this system of oiling the crank pin end of suchconnecting rods is well known to those versed in the art, and incarrying out my invention, a supply of oil is more positively providedby forming a boot leg 3 about the lower end of the DEVICE.

5, 1923. Serial No. 672,699.

run down the front edge of the rod as well as what may be running downthe sides thereof. In this manner it is evident that the boot leg willbe amply supplied with oil at all times during the operation of theengine.

To convey this oil from the boot leg to the upper half of the hearing Iprovide the vertically disposed hole 5 centrally of the web of theconnecting rod and at the upper end of said hole is provided atransverse hole 6 through said web so that oil may readily pass fromeither side of the boot into the central hole; the usual oil groovesbeing provided in the upper brass of the bearing.

By this means it is obvious that a constant supply of oil is providedfor the upper portion of the bearing, and any other convenient means foroiling the lower half of the bearing, such as the cup like orifice 7,may be provided as desired. An abundant supply of the lubricant is notonly thus provided but the fact that the boot 3 has considerablecapacity for holding oil, the same during the upward stroke of theconnecting rod, will provide added pressure in its application to thebearing.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is:

The combination with the connecting rod of an internal combustionengine, of an oil receiving boot leg about the lower end of said rod,said boot being spaced from the face and sides of the rod for thepurpose described, and means of communication between the bottom of theboot leg and the crank pin bearing of the connecting rod.

In testimony whereof I hereunto afiix my signature in the presence oftwo witnesses.

FRANK SGI-IAFER, Sn.

Witnesses:

S. C. BRoNsoN, S. Gno. STEVENS.

